If we can count on predicitivty from this model the flattening would occur as early as March 21 or as last as March 24. The difference between cases from March 21 - March 24 could be as high as 50,000 (+) cases. (Guess off the top of my head, I could do a more detailed and educated guess but I am also cooking dinner for the family at this time)
re: the impact in the US vs S. Korea:
Given that testing, distancing, and quarantine differs between the US and S Korea,
Do we know at what point in the ramp up to 6500 cases did S. Korea institute their methods vs. the US instituting our methods?